Eorþ-tyrewa

According to the Old English Dictionary:

an;

eorþ-tyrewa

m. [tyrwa tar] Earth-tar, asphalte; bĭtūmen :-- Se weall is geworht of tigelan and eorþtyrewan the wall [of Babylon] is built with bricks and earth-tar, Ors. 2, 4; Bos. 44, 25. eorþ-tyrewa